/* Test of searching in a string.
   Copyright (C) 2007 Free Software Foundation, Inc.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2, or (at your option)
   any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software Foundation,
   Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */

/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */

#ifdef HAVE_CONFIG_H
# include <config.h>
#endif

#include <string.h>

#include <locale.h>
#include <stdio.h>
#include <stdlib.h>

#define ASSERT(expr) \
  do									     \
    {									     \
      if (!(expr))							     \
        {								     \
          fprintf (stderr, "%s:%d: assertion failed\n", __FILE__, __LINE__); \
          abort ();							     \
        }								     \
    }									     \
  while (0)

int
main ()
{
  /* configure should already have checked that the locale is supported.  */
  if (setlocale (LC_ALL, "") == NULL)
    return 1;

  /* Tests with a character < 0x30.  */
  {
    const char input[] = "\312\276\300\375 \312\276\300\375 \312\276\300\375"; /* "示例 示例 示例" */
    const char *result = mbsstr (input, " ");
    ASSERT (result == input + 4);
  }

  {
    const char input[] = "\312\276\300\375"; /* "示例" */
    const char *result = mbsstr (input, " ");
    ASSERT (result == NULL);
  }

  /* Tests with a character >= 0x30.  */
  {
    const char input[] = "\272\305123\324\313\320\320\241\243"; /* "号123运行。" */
    const char *result = mbsstr (input, "2");
    ASSERT (result == input + 3);
  }

  /* The following tests show how mbsstr() is different from strstr().  */

  {
    const char input[] = "\313\320\320\320"; /* "诵行" */
    const char *result = mbsstr (input, "\320\320"); /* "行" */
    ASSERT (result == input + 2);
  }

  {
    const char input[] = "\203\062\332\066123\324\313\320\320\241\243"; /* "씋123运行。" */
    const char *result = mbsstr (input, "2");
    ASSERT (result == input + 5);
  }

  {
    const char input[] = "\312\276\300\375 \312\276\300\375 \312\276\300\375"; /* "示例 示例 示例" */
    const char *result = mbsstr (input, "\276\300"); /* "纠" */
    ASSERT (result == NULL);
  }

  {
    const char input[] = "\312\276\300\375 \312\276\300\375 \312\276\300\375"; /* "示例 示例 示例" */
    const char *result = mbsstr (input, "\375 "); /* invalid multibyte sequence */
    ASSERT (result == NULL);
  }

  return 0;
}